"I wasn't going to go because I couldn't afford," said Madison Beltz, a senior at Blue Springs High School.

"I was looking online at certain dresses and they were like $300," student Adrianna Douglas said.

"He asked me. He was like, 'Do you want to go?' and I was like, 'Yeah, I want to go!' But then I was like, 'I don't have a dress.' A friend of mine told me about this," said Anna Concepcion, who is home-schooled.

There are more than 3,500 dresses at the Prom Boutique. The church collects donations all year long, including jewelry and shoes.

"When I first got here, I was really scared that I would not find anything that I would like or in my size. Then I walked in, and there are all these dresses, and there's so many," Beltz said.

Volunteers spend hours making sure that they're top of the line, and even offer free alterations.

"We look at them. We make sure they don't have any stains, and the zippers aren't broken," said Judy Holmes, of the Prom Boutique.

"This is so sweet. They're not gaining anything from doing this, and it just touched my heart," Concepcion said.

The boutique has some options for the guys this year.

The Prom Boutique runs through Saturday. It's open Friday from 3 p.m. to 7 p.m., and Saturday from 9 a.m. to 2 p.m.